TRANMISSION OIL COOLER 21PLATE HYDRA-COOL (PART #678)

The Hydra-Cool® transmission oil cooler is an effective & economical way to keep the transmission at its optimum operating temperature. High efficiency turbulators in each tube direct the fluid for superior heat transfer. Hydra-Cool's® unique plate & fin design allows for effective cooling, yet requires 33% less space. The Hydra-Cool's® compact design is perfect for applications where available mounting space is limited.

100% pressure tested at 150psi for quality assurance

33% more efficient than a comparable tube and fin design

Pre-drilled mounting plates for easy installation

Internal turbulation for efficient heat transfer

3/8” (9 mm) push-on fittings for quick and easy installation

SPECIFICATIONS

Overall Size

Core Size

Part #

Thickness mm

Width mm

Height mm

Width mm

Height mm

Inlet/Outlet Size

Hose Size

Number of Plates

Heat Transfer Rate (BTU/HR)

623

20

281

229

247

200

3/8” (9 mm)

3/8” (9 mm)

1.4 Meters

23

13,937

676

20

281

141

281

112

3/8” (9 mm)

12

11,987

677

20

281

180

281

152

3/8” (9 mm)

17

13,394

678/698

20

281

213

281

184

3/8” (9 mm)

21

13,934

679 / 691

20

281

300

281

265

3/8” (9 mm)

30

15,710

690

3/8” to 5/16” Adaptor Kit for GM transmissions (sold separately)

COMPONENTS

Cooler Core x 1

3/8" Hose x 1

Hose Clamps x 4

Quick Fit Kit Nylon Ties x 4

Detailed Instructions

Transmission Oil Cooler Selection Guide

APPLICATION

Vehicle Type

Year of Manufacture

Engine Capacity

Medium Duty Part #

Heavy Duty

Part #

Sedan / Wagon

Up to 1990*

Up to 2.0 litre

401

403

2.0 - 4.0 litre

403

404

4.0 litre and over

404

676 or 677

Commercial

Up to 1990*

Up to 2.0 litre

401

403

2.0 - 4.0 litre

404

676 or 677

4.0 litre and over

678 or 679 or 691 or 698

678 or 679 or 691 or 698

Sedan / Wagon

1990 to Present

Up to 2.0 litre

676

677

2.0 - 4.0 litre

677

678 or 679 or 691 or 698

4.0 litre and over

678 or 679 or 691 or 698

678 or 679 or 691 or 698

Light Commercial

(12 Volt circuit, Automatic Trans.)

1990 to Present

Up to 2.0 litre

676

677 or 678

2.0 - 4.0 litre

677

678 or 679 or 691 or 698

4.0 litre and over

678 or 679 or 691 or 698

678 or 679 or 691 or 698

Light Commercial

(24 Volt circuit, Automatic Trans.)

Up to 2.0 litre

699 or 692

699 or 692

2.0 - 4.0 litre

699 or 692

692

4.0 litre and over

692

692

V8s & 4WDs

1990 to Present

Up to 2.0 litre

676

677

2.0 - 4.0 litre

678 or 679 or 691 or 698

678 or 679 or 691 or 698

4.0 litre and over

678 or 679 or 691 or 698

678 or 679 or 691 or 698

Ford EA-ED

all models

6 cyl.

677

677

Ford EA-ED

all models

V8

678

678

GM-Holden

all models

6 cyl. & V8

Select Part # as above plus #1005

Select Part # as above plus #1005

*Note:

Hydra-Cool Transmission Coolers are suitable for all vehicles.

Ultra-CoolTransmission Coolers are only recommended for vehicles manufactured prior to 1990.